Banded Mongoose (2016) by Clyde E Nishimura. Original from Smithsonian's National Zoo. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3060375/free-photo-image-animal-animals-public-domain-zooFree Image from public domain licenseFree close up cow's face with harness image, public domain animal CC0 photo. https://www.rawpixel.com/image/5909151/image-background-public-domain-greenFree Image from public domain licensePresident Barack Obama speaks at Cairo University in Cairo, Thursday, June 4, 2009. https://www.rawpixel.com/image/4051279/image-public-domain-person-photoFree Image from public domain licenseFree fingers reaching out mural painting image, public domain human CC0 photo. https://www.rawpixel.com/image/5919885/photo-image-public-domain-hands-michelangeloFree Image from public domain licenseLion in African safari savanna. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303658/free-photo-image-lion-savanna-animals-african-bushFree Image from public domain licenseA musician playing the shehnai (a North Indian oboe). Gouache painting by an Indian artist. https://www.rawpixel.com/image/13963357/image-cartoon-face-personFree Image from public domain licenseSea Lamprey from the Cheboygan River Trap SitePhoto by Karla Bartelt/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4029112/photo-image-plant-food-snakeFree Image from public domain licenseKill Spotted Horse, Assiniboines by Adolph F Muhr and Frank A Rinehart https://www.rawpixel.com/image/14248457/kill-spotted-horse-assiniboines-adolph-muhr-and-frank-rinehartFree Image from public domain licensePrincesse Louise [daughter of Queen Victoria] by Sergei Luvovich Levitsky https://www.rawpixel.com/image/14310256/princesse-louise-daughter-queen-victoria-sergei-luvovich-levitskyFree Image from public domain licenseAsian Water Dragon (2018) by Skip Brown. Original from Smithsonian's National Zoo. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3060402/free-photo-image-dragon-lizard-greenFree Image from public domain licenseJames Sowerby. Line engraving by Mrs D. Turner after T. Heaphy, 1818. https://www.rawpixel.com/image/13971732/james-sowerby-line-engraving-mrs-turner-after-heaphy-1818Free Image from public domain licensePortret in profiel van een Timorees (1821) by Adrianus Johannes Bik https://www.rawpixel.com/image/13791624/portret-profiel-van-een-timorees-1821-adrianus-johannes-bikFree Image from public domain licenseCarl Gottlob Kuehn. Lithograph by F. A. von Fielitz after Thernisch. https://www.rawpixel.com/image/13977478/carl-gottlob-kuehn-lithograph-von-fielitz-after-thernischFree Image from public domain licenseAutoportrait Disderi(Self-Portrait) by André Adolphe Eugène Disdéri https://www.rawpixel.com/image/14283939/autoportrait-disderiself-portrait-andre-adolphe-eugene-disderiFree Image from public domain licenseJohn Howard. Line engraving by T. Holloway, 1791, after himself. https://www.rawpixel.com/image/14002600/john-howard-line-engraving-holloway-1791-after-himselfFree Image from public domain licenseA Tarter character with a grotesque face. Line engraving by D. Custos. https://www.rawpixel.com/image/14016843/tarter-character-with-grotesque-face-line-engraving-custosFree Image from public domain licenseFree glass ball, Christmas ornament image, public domain holiday CC0 photo. https://www.rawpixel.com/image/5923307/photo-image-background-xmas-public-domainFree Image from public domain licenseJohn Locke. Line engraving by J. Goldar after Sir G. Kneller, 1697. https://www.rawpixel.com/image/14000658/john-locke-line-engraving-goldar-after-sir-kneller-1697Free Image from public domain licenseRobert Batty. Photograph after W. Daniell after George Dance, 1799. https://www.rawpixel.com/image/13982928/robert-batty-photograph-after-daniell-after-george-dance-1799Free Image from public domain licenseEdward Bright, a man weighing forty three and a half stone. Line engraving. https://www.rawpixel.com/image/13989099/edward-bright-man-weighing-forty-three-and-half-stone-line-engravingFree Image from public domain licenseFigures of Death lead an old and blind man over a cliff. Etching. https://www.rawpixel.com/image/13982896/figures-death-lead-old-and-blind-man-over-cliff-etchingFree Image from public domain licenseJames Cook. Engraving by Rivers after Sir N. Dance-Holland, 1776. https://www.rawpixel.com/image/13992773/james-cook-engraving-rivers-after-sir-dance-holland-1776Free Image from public domain licenseA man selling bread from a large basket hanging from his shoulders. Watercolour painting. https://www.rawpixel.com/image/13962539/image-cartoon-face-personFree Image from public domain licenseSir Benjamin Thompson, Count von Rumford. Stipple engraving. https://www.rawpixel.com/image/14002888/sir-benjamin-thompson-count-von-rumford-stipple-engravingFree Image from public domain licenseDouble Frame - Fleckenstein and Landscape by Louis Fleckenstein https://www.rawpixel.com/image/14281684/double-frame-fleckenstein-and-landscape-louis-fleckensteinFree Image from public domain licenseUnidentified little boy standing next to an unidentified little girl seated on a table, a large hoop resting on a table leg… https://www.rawpixel.com/image/14307017/photo-image-face-person-public-domainFree Image from public domain licenseHystéro-Épilepsie État Normal by Paul Marie Léon Regnard https://www.rawpixel.com/image/14315220/hystero-epilepsie-etat-normal-paul-marie-leon-regnardFree Image from public domain license[Portrait of a girl wearing a white dress and veil]. by J Wolf https://www.rawpixel.com/image/14308064/portrait-girl-wearing-white-dress-and-veil-wolfFree Image from public domain licenseHenry Blackwood the younger. Line engraving after C. Mellan. https://www.rawpixel.com/image/13991828/henry-blackwood-the-younger-line-engraving-after-mellanFree Image from public domain license"Sadness" from Le Brun, Heads representing the various passions, of the soul , circa 1800 https://www.rawpixel.com/image/13991751/image-paper-cartoon-faceFree Image from public domain licenseUnidentified man with moustache and muttonchops wearing fancy clothes and a top hat https://www.rawpixel.com/image/14308780/photo-image-face-person-clothingFree Image from public domain licenseGeorges Louis Leclerc, Comte de Buffon. Line engraving by J. Romney, 1821, after Meyron. https://www.rawpixel.com/image/13999493/image-cartoon-face-personFree Image from public domain licenseBenjamin Franklin. Line engraving by J. Heath after J. B. Nini, 1777. https://www.rawpixel.com/image/14013623/benjamin-franklin-line-engraving-heath-after-nini-1777Free Image from public domain licenseFree dog with purple flower on the head image, public domain animal CC0 photo. https://www.rawpixel.com/image/5914767/image-background-public-domain-dogFree Image from public domain licenseWilliam Bill. Line engraving by R. Grave after G. P. Harding, 1822. https://www.rawpixel.com/image/13999320/william-bill-line-engraving-grave-after-harding-1822Free Image from public domain licenseFrances Eakins Crowell and her children by Thomas Eakins https://www.rawpixel.com/image/14284330/frances-eakins-crowell-and-her-children-thomas-eakinsFree Image from public domain licenseFort des Halles (Market Porter) by André Adolphe Eugène Disdéri https://www.rawpixel.com/image/14285539/fort-des-halles-market-porter-andre-adolphe-eugene-disderiFree Image from public domain licenseJohn Ray. Stipple engraving by J. Roffe, 1820, after Mary Beale. https://www.rawpixel.com/image/14016039/john-ray-stipple-engraving-roffe-1820-after-mary-bealeFree Image from public domain licenseChristoph Gottwaldt. Line engraving by G. Edelinck after A. Stech. https://www.rawpixel.com/image/13980313/christoph-gottwaldt-line-engraving-edelinck-after-stechFree Image from public domain license